An assembly tool for a bucket shaft sleeve

Abstract

The utility model discloses a kind of assembly tool for bucket shaft sleeve, including connecting sleeve, first flange and second flange are respectively assembled in the both ends of connecting sleeve, pull rod is arranged in connecting sleeve, the left end of pull rod penetrates first flange, baffle is fixedly connected in the lateral wall of pull rod, the baffle is hollow structure, expansion assembly is arranged in the lateral wall of baffle, hydraulic cylinder is installed in the lateral wall of second flange, connecting assembly is arranged between the telescopic end of hydraulic cylinder and pull rod. Expansion assembly includes multiple telescopic rods movably connected in the lateral wall of baffle, the utility model is designed by adjustable diameter arc plate, can be flexibly adjusted according to the diameter of different bucket shaft sleeve, so that a set of tooling can be compatible with multiple specifications of bucket shaft sleeve.

Description

Technical Field

[0001] This utility model belongs to the field of bucket shaft assembly technology, specifically relating to an assembly tooling for bucket shaft sleeves. Background Technology

[0002] During the assembly and maintenance of bucket bearings (such as bucket bearings of construction machinery like excavators and loaders), the core component, the bucket bushing, needs to be precisely installed or removed into the shaft hole of the mechanical component.

[0003] Traditional bucket shaft sleeve installation methods lack universal tooling to accommodate bucket shaft sleeves of different diameters. Multiple sets of special tools are required for different specifications of shaft sleeves, resulting in high tooling costs. In addition, disassembly or installation often relies on manual hammering, prying with crowbars and other brute force methods, which not only makes it difficult to control the uniformity of force application, but also easily causes scratches or deformation to the inner wall of the bucket shaft sleeve and shaft hole, resulting in low replacement efficiency.

[0004] Therefore, it is necessary to provide an assembly tooling for the bucket shaft sleeve to overcome the aforementioned technical defects. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an assembly tool for bucket shaft sleeve. This assembly tool aims to solve the technical problem that the disassembly or installation of the bucket shaft sleeve and shaft hole are easily scratched or deformed by relying on manual hammering, prying with crowbars and other brute force methods.

[0006] To solve the above-mentioned technical problems, this utility model provides an assembly fixture for a bucket shaft sleeve, including a connecting sleeve, with a first flange and a second flange respectively assembled at both ends of the connecting sleeve. A pull rod is provided inside the connecting sleeve, with the left end of the pull rod penetrating through the first flange. A baffle is connected to the side wall of the pull rod. The baffle is a hollow structure, and an expansion component is provided on the side wall of the baffle. A hydraulic cylinder is installed on the side wall of the second flange, and a connecting component is provided between the telescopic end of the hydraulic cylinder and the pull rod.

[0007] Furthermore, the expansion assembly includes multiple telescopic rods movably connected to the side wall of the baffle, and each telescopic rod has an arc-shaped plate fixedly connected to its end away from the baffle. The inner cavity of the baffle is provided with a driving assembly.

[0008] Furthermore, the drive assembly includes a lead screw rotatably connected to the end of the pull rod. One end of the lead screw is rotatably connected to the inner wall of the baffle, and the other end of the lead screw is fixedly connected to a handwheel. A threaded sleeve is threadedly connected to the side wall of the lead screw in the inner cavity of the baffle. Multiple connecting rods are hinged to the side wall of the threaded sleeve, and the other end of the connecting rod is hinged to the telescopic rod.

[0009] Furthermore, the connecting assembly includes a connecting plate fixedly connected to the end face of the pull rod and the end face of the telescopic end of the hydraulic cylinder. The side wall of the connecting plate is provided with an elongated hole, and a pin is provided in the elongated hole on both sides. The side wall of the pin is provided with a through hole, and a cotter pin is inserted into the through hole.

[0010] Furthermore, the first flange and the second flange sidewalls are threaded with multiple bolts, and the multiple bolts abut against the sidewall of the connecting sleeve.

[0011] Furthermore, the second flange sidewall has multiple through grooves.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This utility model, through the design of the connecting sleeve, pull rod, baffle, expansion component and drive component and the design of the adjustable diameter arc plate, can be flexibly adjusted according to the diameter of different bucket shaft sleeves, so that one set of tooling can be compatible with multiple specifications of bucket shaft sleeves, eliminating the need to prepare tools separately for each specification, and greatly reducing the procurement and inventory costs of tooling. Secondly, the arc-shaped plate can fit tightly against the end of the bucket bearing, and with the stable and uniform thrust provided by the hydraulic cylinder, it avoids the impact and damage to the bushing and shaft hole caused by traditional brute force operation, effectively ensuring the integrity of the components and the assembly accuracy. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the second flange of this utility model; Figure 4 This is a perspective view of the pull rod of this utility model; Figure 5 This is a cross-sectional structural diagram of the tie rod of this utility model; Figure 6 This is a schematic diagram of the internal structure of the baffle of this utility model; Figure 7 This utility model Figure 6 Enlarged view of point A in the image; Figure 8 This utility model Figure 3 Enlarged view of point B in the image.

[0014] The markings in the attached diagram are as follows: 1. Connecting sleeve; 2. First flange; 3. Second flange; 4. Tie rod; 5. Baffle; 6. Arc plate; 7. Telescopic rod; 8. Screw rod; 9. Handwheel; 10. Screw sleeve; 11. Connecting rod; 12. Hydraulic cylinder; 13. Connecting plate; 14. Pin; 15. Cotter pin; 16. Bolt; 17. Through groove; 18. Bucket shaft sleeve body. Detailed Implementation

[0015] This specific embodiment is an assembly fixture for a bucket shaft sleeve, and its structural schematic diagram is shown below. Figures 1-8 As shown, it includes a connecting sleeve 1, with a first flange 2 and a second flange 3 respectively assembled at both ends of the connecting sleeve 1. A pull rod 4 is provided inside the connecting sleeve 1, with the left end of the pull rod 4 passing through the first flange 2. A baffle 5 is fixedly connected to the side wall of the pull rod 4. The baffle 5 is a hollow structure, and an expansion component is provided on the side wall of the baffle 5. A hydraulic cylinder 12 is installed on the side wall of the second flange 3, and a connecting component is provided between the telescopic end of the hydraulic cylinder 12 and the pull rod 4.

[0016] Among them, the connecting sleeve 1 is a component for installing the bucket shaft and bucket shaft sleeve on the mechanical facility. The inner wall is a shaft hole, and the inner wall is also provided with the bucket shaft sleeve body 18.

[0017] like Figure 5 and Figure 6 As shown, the expansion assembly includes multiple telescopic rods 7 movably connected to the side wall of the baffle 5. Each telescopic rod 7 has an arc-shaped plate 6 fixedly connected to the end away from the baffle 5. A drive assembly is provided in the inner cavity of the baffle 5.

[0018] The number of arc-shaped plates 6 is preferably four. By adjusting the unfolding position of the arc-shaped plates 6, the arc-shaped plates 6 can be adapted to bucket shaft sleeve bodies 18 of different specifications, which facilitates the disassembly of old bucket shaft sleeve bodies 18 and the installation of new bucket shaft sleeve bodies 18.

[0019] like Figure 5 and Figure 7 As shown, the drive assembly includes a lead screw 8 rotatably connected to the end of the pull rod 4. One end of the lead screw 8 is rotatably connected to the inner wall of the baffle 5, and the other end of the lead screw 8 is fixedly connected to a handwheel 9. The side wall of the lead screw 8 is threadedly connected to a threaded sleeve 10 in the inner cavity of the baffle 5. Multiple connecting rods 11 are hinged to the side wall of the threaded sleeve 10, and the other end of the connecting rod 11 is hinged to the telescopic rod 7.

[0020] The arc plate 6 is manually controlled to unfold, which makes it easy to control the movement distance of the arc plate 6. In actual operation, the unfolded position of the arc plate 6 should be close to the inner wall of the connecting sleeve 1. The distance between the two can be maintained at 1-3mm, so as to fit the end of the bucket shaft sleeve body 18 to the maximum extent and prevent deformation and other problems caused by uneven force on the bucket shaft sleeve body 18.

[0021] like Figure 8 As shown, the connecting assembly includes a connecting plate 13 fixedly connected to the end face of the pull rod 4 and the telescopic end face of the hydraulic cylinder 12. The side walls of the connecting plate 13 are respectively provided with elongated holes, and pins 14 are disposed within the elongated holes on both sides. The side walls of the pins 14 are provided with through holes, and cotter pins 15 are inserted into the through holes. The connecting assembly uses pins 14 for connection, enabling quick connection and disconnection between the pull rod 4 and the hydraulic cylinder 12.

[0022] like Figure 1 and Figure 2 As shown, the first flange 2 and the second flange 3 are threadedly connected to the side walls with multiple bolts 16, which abut against the side wall of the connecting sleeve 1.

[0023] Specifically, the diameters of the first flange 2 and the second flange 3 can be set to various specifications to meet the needs of different parts. Secondly, multiple bolts 16 are used for connection, and the local bolts 16 can be tightened according to the shape of the parts to better fix them.

[0024] like Figure 3 As shown, the second flange 3 has multiple through slots 17 on its side wall. The through slots 17 facilitate the operation of the connecting components, allowing the hydraulic cylinder 12 to be connected to and disconnected from the tie rod 4. On the other hand, during the assembly of the bucket bushing body 18, it is possible to promptly determine whether the assembly is in place.

[0025] Working principle: When it is necessary to disassemble the old bucket shaft sleeve body 18, first fix the first flange 2 to the end of the connecting sleeve 1 with bolts 16, then insert the pull rod 4 into the connecting sleeve 1 and pass through the first flange 2, adjust the position of the baffle 5 so that it is located at the end of the bucket shaft sleeve body 18, then turn the handwheel 9 to drive the screw 8 to rotate, the screw 8 drives the threaded sleeve 10 to move horizontally, the threaded sleeve 10 drives the connecting rod 11 to expand, thereby pushing the telescopic rod 7 outward, the telescopic rod 7 drives the arc plate 6 to expand, so that the side of the arc plate 6 abuts against the end of the bucket shaft sleeve body 18, then fix the second flange 3 to the end of the connecting sleeve 1 with bolts 16, insert the pin 14 into the long hole on the connecting plates 13 on both sides, and insert the cotter pin 15 to limit the pin 14; Then, the hydraulic cylinder 12 is activated to pull the lever 4. The lever 4 drives the arc plate 6 to squeeze the bucket shaft sleeve body 18, pushing the bucket shaft sleeve body 18 out of the connecting sleeve 1, thus achieving the purpose of quick replacement. When installing a new bucket shaft sleeve body 18, the baffle 5 can be positioned on the outside of the connecting sleeve 1, and the unfolding diameter of the arc plate 6 can be adjusted. The new bucket shaft sleeve body 18 is then inserted into the end of the connecting sleeve 1, and the arc plate 6 is used to apply thrust to push the bucket shaft sleeve body 18 into the connecting sleeve 1, thus achieving the purpose of quick assembly.

[0026] All technical features in this embodiment can be freely combined according to actual needs.

[0027] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. An assembly fixture for a bucket shaft sleeve, comprising a connecting sleeve (1), characterized in that: The connecting sleeve (1) is equipped with a first flange (2) and a second flange (3) at both ends respectively. A pull rod (4) is provided inside the connecting sleeve (1). The left end of the pull rod (4) passes through the first flange (2). A baffle (5) is connected to the side wall of the pull rod (4). The baffle (5) is a hollow structure. An expansion component is provided on the side wall of the baffle (5). A hydraulic cylinder (12) is installed on the side wall of the second flange (3). A connecting component is provided between the telescopic end of the hydraulic cylinder (12) and the pull rod (4).

2. The assembly fixture for a bucket shaft sleeve according to claim 1, characterized in that: The expansion assembly includes multiple telescopic rods (7) movably connected to the side wall of the baffle (5). Each telescopic rod (7) is fixedly connected to an arc-shaped plate (6) at the end away from the baffle (5). A drive assembly is provided in the inner cavity of the baffle (5).

3. The assembly fixture for a bucket shaft sleeve according to claim 2, characterized in that: The drive assembly includes a lead screw (8) rotatably connected to the end of the pull rod (4). One end of the lead screw (8) is rotatably connected to the inner wall of the baffle (5), and the other end of the lead screw (8) is fixedly connected to a handwheel (9). The side wall of the lead screw (8) is threadedly connected to a threaded sleeve (10) in the inner cavity of the baffle (5). The side wall of the threaded sleeve (10) is hinged to a plurality of connecting rods (11), and the other end of the connecting rods (11) is hinged to the telescopic rod (7).

4. The assembly fixture for a bucket shaft sleeve according to claim 1, characterized in that: The connecting components include connecting plates (13) fixedly connected to the end face of the pull rod (4) and the telescopic end face of the hydraulic cylinder (12). The side walls of the connecting plates (13) are respectively provided with elongated holes, and pins (14) are provided in the elongated holes on both sides. The side walls of the pins (14) are provided with through holes, and cotter pins (15) are inserted into the through holes.

5. The assembly fixture for a bucket shaft sleeve according to claim 1, characterized in that: The first flange (2) and the second flange (3) are threaded with a plurality of bolts (16), and the plurality of bolts (16) abut against the side wall of the connecting sleeve (1).

6. The assembly fixture for a bucket shaft sleeve according to claim 1, characterized in that: The second flange (3) has multiple through grooves (17) on its side wall.

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